Home / 327,821.40-491,642.10-207,698.04

Finding the Fourth Proportional to 327,821.40, 491,642.10 and 207,698.04

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Solution

The fourth proportional to 327,821.40, 491,642.10 and 207,698.04 is: 311,490.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,821.40 : 491,642.10 = 207,698.04 : x
  2. Step 2: Convert to fraction form
    327,821.40/491,642.10 = 207,698.04/x
  3. Step 3: Cross multiply
    327,821.40x = 491,642.10 × 207,698.04
  4. Step 4: Simplify right side
    327,821.40x = 102,113,100,551.48
  5. Step 5: Solve for x
    x = 102,113,100,551.48/327,821.40
  6. Step 6: Final answer
    x = 311,490.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.